Multiplexed encryption using chaotic systems with multiple stochastic-delayed feedbacks

Damien Rontani (1, 2, 3) , Marc Sciamanna (2, 1) , A. Locquet (1, 3) , D S Citrin (1, 3)

1 Georgia Tech Lorraine [Metz]
2 LMOPS - Laboratoire Matériaux Optiques, Photonique et Systèmes
3 ECE GeorgiaTech - School of Electrical and Computer Engineering - Georgia Insitute of Technology

We propose an efficient and fast bit-multiplexed encryption scheme exploiting hyperchaotic regimes of a single nonlinear oscillator with multiple time-delay feedback loops. Each data stream is encrypted by digitally modulating the values of the various time delays and decrypted using chaos synchronization and cross-correlation measurements. We have numerically applied our approach to an optoelectronic chaotic oscillator based on standard semiconductor lasers subjected to multiple feedbacks and have demonstrated successful data transmission and recovery between multiple users at several Gbits/s on a single communication channel.

Domaines: Sciences de l'ingénieur [physics]

Damien Rontani, Marc Sciamanna, A. Locquet, D S Citrin. Multiplexed encryption using chaotic systems with multiple stochastic-delayed feedbacks. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2009, 80 (6), pp. 066209-1-5. ⟨10.1103/physreve.80.066209⟩. ⟨hal-02993521⟩